Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-19653

20
FAUCET Score

CVE-2018-19653 describes a vulnerability in HashiCorp Consul versions 0.5.1 through 1.4.0, where agent-to-agent RPC communication can occur in cleartext due to insufficient documentation of the verify_outgoing setting. This medium-severity vulnerability (CVSS 5.9) has a network attack vector and high confidentiality impact, allowing an attacker to intercept sensitive communications. While there is no evidence of active exploitation, exploit code, or significant community discussion, HashiCorp has provided reconfiguration steps to mitigate the issue without requiring a software upgrade.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.5.1, <= 1.4.0CPE matchmatch criteria
cpe:2.3:a:hashicorp:consul:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.22%
Probability of exploitation in next 30 days
EPSS Percentile
65.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0122 is in the 32nd percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/hashicorp/consulFixed in: 1.4.1

Vendor Advisories (1)

goGHSA-4qvx-qq5w-695pmedium

HashiCorp Consul can use cleartext agent-to-agent RPC communication

May 14, 2022

References

github.com / hashicorp/consul/pull/5069
Issue TrackingPatchThird Party Advisory
groups.google.com / forum